Web Development Beginner

What is JSON?

JavaScript Object Notation — a lightweight data interchange format that is easy for humans to read and machines to parse.

JSON represents structured data using key-value pairs and arrays. It supports strings, numbers, booleans, null, objects ({}), and arrays ([]). Example: {"name": "John", "age": 30, "hobbies": ["coding", "reading"]}.

JSON is the dominant format for web APIs, configuration files, and data storage. It is language-independent and supported by virtually every programming language. Related formats include YAML (more readable) and TOML (for configuration).

Related Terms

A technique for making asynchronous HTTP requests from a web page without reloading the entire page.

API (Application Programming Interface)

A set of rules and protocols that allows different software applications to communicate and exchange data.

The latest HTTP version that uses QUIC instead of TCP, providing faster connections and better performance on unreliable networks.

Server-Sent Events

A server push technology that enables a server to send real-time updates to a browser over a single HTTP connection.

An XML file that lists all important URLs on a website, helping search engines discover and crawl content efficiently.

Hypermedia As The Engine Of Application State — a REST constraint where API responses include links to related actions and resources.

View All Web Development Terms →